An Efficient Reanalysis Method for Topological Optimization of Vibrating Continuum Structures for Simple and Multiple Eigenfrequencies

Table 2

Results of maximization the first natural frequency of the 2D rectangle clamped beam.

Method	Design iterations	Total SI iterations	Total BCAS iterations	Objective value	MAC value	CPU times (sec.)
Exact method	51	218	0	126.91		449.6
Proposed method	36	93	47	123.56	0.975	297.9